Unable to luanch plasma-desktop snap

I was trying to use plasma snap for testing. but got an error
Xsession: unable to lunch "snap run plasma-desktop.startkde" session --- "snap run plasma-desktop.startkde" not found. falling back to....

FIX

  1. change “Exec=snap run plasma-desktop.startkde” to
    “Exec=/snap/bin/plasma-desktop.startkde” in plasma-snap.desktop file

STEPS TO REPRODUCE

  1. sudo snap install --edge --devmode plasma-desktop
  2. sudo wget https://metadata.neon.kde.org/snap/plasma-snap.desktop -O /usr/share/xsessions/plasma-snap.desktop
  3. select plasma snap from login screen

FWIW, it worked without issue for me on top of Ubuntu MATE 18.10 without any changes.